Fatigue life improvement of 12Cr1МoV steel by irradiation with Zr+ ion beam

Panin, S. V.; Власов, И. В.; Сергеев, В. П.; Maruschak, Pavlo; Sunder, R.; Ovechkin, B. B.

doi:10.1016/j.ijfatigue.2014.10.011

Cited by 25 publications

(9 citation statements)

References 32 publications

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“…Ion implantation is a modern material surface modification technology that has become increasingly common for changing the characteristics and properties of metal materials [14]. It can selectively improve the wear resistance, corrosion resistance, oxidation resistance, and fatigue resistance of the material surface by implanting a small amount of metal ions without changing the original properties of the material substrate [15,16,17]. In recent years, ion implantation of lanthanum and yttrium has been mainly focused on enhancing the corrosion resistance, high-temperature oxidation resistance, and biocompatibility of pure metals or alloys [18,19,20].…”

Section: Introductionmentioning

confidence: 99%

Study of the Catalytic Strengthening of a Vacuum Carburized Layer on Alloy Steel by Rare Earth Pre-Implantation

Cai-yun

Xing³

et al. 2019

Materials

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Conventional carburizing has disadvantages, such as high energy consumption, large deformation of parts, and an imperfect structure of the carburizing layer. Hence, a rare earth ion pre-implantation method was used to catalyze and strengthen the carburized layer of 20Cr2Ni4A alloy steel. In this study, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive microanalysis (EDS), transmission electron microscopy (TEM), and Rockwell/Vickers hardness testing were used to analyze the microstructure, phase composition, retained austenite content, hardness, carburized layer thickness, and carbon diffusion. The results showed that lanthanum and yttrium ions implanted into the 20Cr2Ni4A steel formed solid solutions of rare earth ions and a large number of dislocations, which improved the diffusion coefficient of carbon elements on the carburized surface and the uniformity of the carbon distribution. Simultaneously, rare earth ion implantation improved the structure and hardness of the vacuum carburized layer. Compared to the lanthanum ion implantation, yttrium ion implantation caused the structure of the carburized layer to be finer, and the carbon diffusion coefficient increased by 1.17 times; in addition, the surface hardness of the carburized layer was 61.8 HRC.

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Section: Introductionmentioning

confidence: 99%

Study of the Catalytic Strengthening of a Vacuum Carburized Layer on Alloy Steel by Rare Earth Pre-Implantation

Cai-yun

Xing³

et al. 2019

Materials

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“…For instance, fatigue fracture of metals and propagation of fatigue cracks depend on stress levels and rates, surface roughness, heterogeneity of microstructure, etc. To an extent, all of these factors are relevant for the growth of fatigue cracks [ 1 , 2 , 3 , 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Fatigue-Induced Evolution of AISI 310S Steel Microstructure after Electron Beam Treatment

et al. 2020

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Research was carried out to explore the effect of pulsed electron beam irradiation on the behavior of structure and phase state in AISI 310S steel exposed to high-cycle fatigue. A 2.2 times increase in the fatigue life of samples irradiated by electron beams was revealed. The outcomes of scanning and transmission electron microscopic studies suggest the most probable reason for the fracture of steel samples irradiated by a high-intensity electron beam to be microcraters originating on a treated surface and acting as stress risers initiating the propagation of microcracks. The irradiation with a pulsed electron beam causes extremely fast melting of the surface. As a result of the subsequent rapid crystallization, a polycrystalline structure nearly twice as small as an average grain in the untreated steel is formed. Since a surface layer crystallizes rapidly, crystallization cells ranging from 120 to 170 nm develop in the volume of grains. The fatigue testing is shown to be associated with a martensite transformation γ ⇒ ε in the surface layer. One option to intensify a fatigue life increase of the steel in focus is supposed to be the neutralization of crater-forming on a surface treated by electron beams.

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“…Therefore, the task of extending the fatigue life of such materials is very relevant. It is known that energy fields, such as laser, electromagnetic, ultrasonic and other fields, change the initial physical and mechanical properties of materials, in particular, those of their surface layers [15,16,17,18,19,20]. It was found that dynamic non-balanced processes (DNP) arise in materials under pulse influences.…”

Section: Introductionmentioning

confidence: 99%

“…While analyzing the results of previous studies, it should be noted that they were conducted using complex and expensive equipment without attaining a significant mechanical effect. Therefore, their physical justification cannot be adequate [15,16,17,18,19,20].…”

Section: Introductionmentioning

confidence: 99%

Variation of Relief Topography and Hardness of Surface Layers of Materials Due to Impact-Oscillatory Loading

et al. 2019

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It was shown previously that cyclic loading can be used to extend the fatigue life of sheet plastic materials subjected to the preliminary impact-oscillatory loading. This type of loading causes dynamic non-equilibrium processes (DNP) in materials, which lead to the formation of dissipative structures in materials and on their surface. The density of these dissipative structures is less than that of the base metal. In this paper, the results of investigations into the relief and hardness of surface layers modified by impact-oscillatory loading are analyzed on the example of five structural materials. The signs of a regular, orderly system of microextrusions formed on flat surfaces of all materials due to DNP are considered along with the alignment of roughness parameters Rz and Ra of relief profiles. The effect of impact-oscillatory loading is one of the main causes that lead to the extension of the fatigue life of materials.

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Fatigue life improvement of 12Cr1МoV steel by irradiation with Zr+ ion beam

Cited by 25 publications

References 32 publications

Study of the Catalytic Strengthening of a Vacuum Carburized Layer on Alloy Steel by Rare Earth Pre-Implantation

Study of the Catalytic Strengthening of a Vacuum Carburized Layer on Alloy Steel by Rare Earth Pre-Implantation

Fatigue-Induced Evolution of AISI 310S Steel Microstructure after Electron Beam Treatment

Variation of Relief Topography and Hardness of Surface Layers of Materials Due to Impact-Oscillatory Loading

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